Time to Upgrade Your Mask
This is a very timely article for the Wall Street Journal. The last sentence is the critical one. click on the link to see the graphics displayed better.https://www.wsj.com/articles/cloth-face-mask-omicron-11640984082?st=d1mx7yt67b3pdzp&reflink=desktopwebshare_permalink Why Cloth Masks Might Not Be Enough as Omicron Spreads With the…